Allodynerus bimaculus Zhang, Chen & Li, 2020

Zhang, Xue, Chen, Bin & Li, Ting-Jing, 2020, A taxonomic revision of Allodynerus Blüthgen (Hymenoptera: Vespidae: Eumeninae) from China, Zootaxa 4750 (4), pp. 545-559 : 549-550

Allodynerus bimaculus Zhang, Chen & Li , sp. nov.

( Figs 13–19 )

Material examined. Holotype, 1♀, China, Tibet, Basu County, Lagen Town, Jiaoba Village , 30°1′49″N, 97°0′56″E, 3114 m, 24.VII.2014, Tingjing Li ( CQNU).

Description. Female ( Fig. 13 ). Body length 7.83 mm. Black, following parts brownish yellow: clypeus ( Fig. 14 ), mandible largely, a short band along lower inner eye orbit, inter-antennal spot, scape, pedicel, an elongated band on temple, almost pronotum, upper part of anterior vertical face of pronotum, a large spot on mesepisternum, tegula except a central translucent spot, parategula, metanotum ( Fig. 13 ), long posterolateral band of propodeum, apical bands of terga I–VI and sterna II–VI, two large lateral spots of tergum II (lateral spots and apical band almost merged), one central transverse and wide band of sternum II (transverse and apical bands almost merged) ( Fig 16 ), and most of legs; wings lightly brown. Body with dense pale brown setae, setae on propodeum relatively longer than those of other parts.

Head. Clypeus 1.15× as wide as long in frontal view, with dense punctures, apex slightly emarginate, emargination width about 1/5 of total clypeal width ( Fig. 14 ); mandible normal, third tooth without one deep incision; frons, vertex and temple with coarse punctures, punctures of frons reticulate and relatively denser than those of other parts of head ( Fig. 14 ); smooth area around cephalic foveae extended to outer margin of posterior ocellus ( Fig. 15 ).

Mesosoma. Mesosoma punctate, punctures somewhat coarser than those on head; pronotal humeral angle blunt, anterior vertical face of pronotum smooth, dorsal face reticulate ( Fig. 15 ); setae on anterior part of mesonotum not as brush-like in lateral view; mesopleuron with dense punctures, somewhat reticulate ( Fig. 19 ); scutellum flat, rectangle, and punctures at base sparser than those at apex; metanotum coarsely punctate, slightly concave mesally; dorsal face of propodeum ( Fig. 17 ) with honeycomb punctures, lateral face coriaceous ( Fig. 19 ); posterior face with minute transverse striae and one median longitudinal carina; ventral side of fore both trochanter and femur with short and dense setae.

Metasoma. Tergum I ( Fig. 16 ) wider than long, 1.22× as wide as long in dorsal view, punctate, punctures sparse from base to apex, those at the base reticulate and distinctly denser and coarser, apical yellow band wide and regularly arcuate; tergum II mostly with uniform and dense punctures, those at the base a little sparser, and at apex two rows of denser punctures forming a wide transverse groove, with a broad apical lamella bent backward up ( Fig. 16 ); sternum II ( Fig. 18 ) convex basally, punctures much sparser than those of tergum I, punctures at the basal half distinctly sparser than those at apical half; punctures at visible part of metasomal sternum III somewhat denser than those of sternum II ( Fig. 18 ).

Male. Unknown.

Distribution. China (Tibet).

Remarks. This species is similar to A. reduncus Zhang, Chen & Li , sp. nov. in sharing with its smooth area around cephalic foveae extended to outer margin of posterior ocellus ( Figs 8 , 15 ), body with abundant brownish yellow markings, third tooth of mandible without deep incision, and an apical bent lamella of tergum II. It differs from A. reduncus and other members of the genus by the following character combination: tergum I ( Figs 5 , 16 ) with sparser punctures and apically with wider and regularly arcuate yellow band and tergum II with two large lateral spots ( Fig. 16 ).

Etymology. The specific name is derived from two Latin words: bi - (=two) and macula (=spot), referring to tergum II that has two large lateral yellow spots.

Figures

FIGURES 13–19. Allodynerus bimaculus sp. nov., holotype, ♀. 13. Habitus, dorsal view; 14. Clypeus, frontal view; 15. Vertex and anterior surface of pronotum, dorsal view; 16. Metasoma, dorsal view; 17. Propodeum, dorsal view; 18. Metasoma, ventral view; 19. Mesosoma, lateral view.

FIGURES 1–12. Allodynerus reduncus sp. nov., 1, 3, 5–9, holotype, ♀; 4, 10–12, paratype, ♂. 1–2. Habitus, dorsal view; 3–4. Clypeus, frontal view; 5. Metasoma, dorsal view; 6. Metasoma, ventral view; 7. Propodeum, dorsal views; 8. Vertex and anterior surface of pronotum, dorsal view; 9. Mesosoma, lateral view; 10. Antennal segment, ventral view; 11. Genitalia, ventral view; 12. Penile valve, ventral view. lvv, ventral lobe of penile valve. ap, basal apodeme of penile valve. pb, basal plate of penile valve.